Mumbai: Benchmark equity indices fell for the second straight day on Wednesday as the RBI left the repo rate unchanged while global markets suffered a sell-off as concerns over the US-China trade war resurfaced.

The BSE Sensex tumbled 249.90 points, or 0.69 percent, to close at 35,884.41. Similarly, the broader NSE Nifty fell 84.55 points, or 0.74 percent, to end at 10,784.95.

The fall in domestic equities was led by metal, pharma, auto and banking stocks.

The Reserve Bank of India on Wednesday left the repo rate unchanged while maintaining the stance of 'calibrated tightening' of policy.

Representational image. Reuters.

The key rate remains at 6.5 percent. This is for the second time in a row that the central bank did not tinker with the interest rate.

Weakness in the rupee against the US dollar also weighed on domestic stocks. The local unit fell 11 paise to 70.60 against the US dollar intra-day.

Global investor sentiment turned weak after uncertainty over negotiations between the US and China on their trade dispute.

US President Donald Trump and his Chinese counterpart Xi Jinping had agreed to a truce at the G20 meet.

Trump, however, muddied the waters by suggesting the possibility of an extension of trade talks.

"The negotiations with China have already started. Unless extended, they will end 90 days" from Saturday, Trump tweeted.